test_base.c

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/* ==================== [Includes] ========================================== */
 
#include "xf_utils.h"
#include "xf_osal.h"
#include "xf_vfs.h"
#include "xf_vfs_littlefs.h"
 
/* ==================== [Defines] =========================================== */
 
#define TAG "test_base"
 
/* ==================== [Typedefs] ========================================== */
 
/* ==================== [Static Prototypes] ================================= */
 
/* ==================== [Static Variables] ================================== */
 
/* ==================== [Macros] ============================================ */
 
/* ==================== [Global Functions] ================================== */
 
void test_base(void)
{
    /*
        注册你想使用的分区，
        本例中使用平台注册的默认分区（自动初始化中注册），
        因此可以不用注册。
     */
 
    /* 初始化 xf_fal */
    xf_fal_init();
 
    XF_LOGI(TAG, "Initializing LittleFS");
 
    /* 配置 xf_vfs_littlefs 配置 */
    xf_vfs_littlefs_conf_t conf = {
        .base_path          = "/littlefs",
        .partition_label    = XF_FAL_DEFAULT_PARTITION_NAME,
        .format_if_mount_failed = true,
        .dont_mount             = false,
    };
    /*
        使用上面定义的设置来初始化和挂载 LittleFS 文件系统。
        注意：xf_vfs_littlefs_register 是一个一体化的便利函数。
     */
    xf_err_t ret = xf_vfs_littlefs_register(&conf);
    if (ret != XF_OK) {
        if (ret == XF_FAIL) {
            XF_LOGE(TAG, "Failed to mount or format filesystem");
        } else if (ret == XF_ERR_NOT_FOUND) {
            XF_LOGE(TAG, "Failed to find LittleFS partition");
        } else {
            XF_LOGE(TAG, "Failed to initialize LittleFS (%s)", xf_err_to_name(ret));
        }
        return;
    }
 
    size_t total = 0, used = 0;
    ret = xf_littlefs_info(conf.partition_label, &total, &used);
    if (ret != XF_OK) {
        XF_LOGE(TAG, "Failed to get LittleFS partition information (%s)", xf_err_to_name(ret));
    } else {
        XF_LOGI(TAG, "Partition size: total: %d, used: %d", total, used);
    }
 
    /* 使用 xf_vfs 接口来处理文件 */
    XF_LOGI(TAG, "Opening file");
    int fd = xf_vfs_open("/littlefs/hello.txt", XF_VFS_O_WRONLY | XF_VFS_O_CREAT | XF_VFS_O_TRUNC,
                         XF_VFS_S_IRUSR | XF_VFS_S_IWUSR);
    if (fd < 0) {
        XF_LOGE(TAG, "Failed to open file for writing");
        return;
    }
 
    const char *content = "LittleFS Rocks!\n";
    if (xf_vfs_write(fd, content, strlen(content)) < 0) {
        XF_LOGE(TAG, "Failed to write to file");
        xf_vfs_close(fd);
        return;
    }
    xf_vfs_close(fd);
    XF_LOGI(TAG, "File written");
 
    /* 重命名之前检查目标文件是否存在 */
    xf_vfs_stat_t st;
    if (xf_vfs_stat("/littlefs/foo.txt", &st) == 0) {
        /* 如果存在则删除 */
        if (xf_vfs_unlink("/littlefs/foo.txt") != 0) {
            XF_LOGE(TAG, "Failed to delete existing file");
            return;
        }
    }
 
    /* 重命名原始文件 */
    XF_LOGI(TAG, "Renaming file");
    if (xf_vfs_rename("/littlefs/hello.txt", "/littlefs/foo.txt") != 0) {
        XF_LOGE(TAG, "Rename failed");
        return;
    }
 
    /* 打开重命名的文件进行读取 */
    XF_LOGI(TAG, "Reading file");
    fd = xf_vfs_open("/littlefs/foo.txt", XF_VFS_O_RDONLY, 0);
    if (fd < 0) {
        XF_LOGE(TAG, "Failed to open file for reading");
        return;
    }
 
    char line[128];
    ssize_t bytesRead = xf_vfs_read(fd, line, sizeof(line) - 1);
    xf_vfs_close(fd);
    if (bytesRead < 0) {
        XF_LOGE(TAG, "Failed to read from file");
        return;
    }
    line[bytesRead] = '\0'; // 确保字符串以空字符结尾
    char *pos = strchr(line, '\n');
    if (pos) {
        *pos = '\0';
    }
    XF_LOGI(TAG, "Read from file: '%s'", line);
 
    /* 全部完成，卸载分区并禁用 LittleFS */
    xf_vfs_littlefs_unregister(conf.partition_label);
    XF_LOGI(TAG, "LittleFS unmounted");
}
 
/* ==================== [Static Functions] ================================== */